With A Pinch Of Salt...You can also try adding a pinch of salt to the mixture. Add a tiny bit of salt to your powder before adding water. While you brush, you'll feel a tingling sensation. This is a more severe program for whitening, so you don't need to do it as often. It's more abrasive than baking soda alone, so it should be done only 2 or 3 times a month.Be sure to wash your mouth out well afterward with either water or mouthwash. A Sweeter SolutionFor an even better way to a healthy smile, try mixing a strawberry with your paste. Strawberries contain malic acid, which is a natural tooth brightener.Mash a strawberry until it's pulp. Then, add baking soda and mix. Keep mixing until it is blended completely with the strawberry pulp. Now, use it as your toothpaste.You can have a brighter smile without all the bother. Get your teeth white the natural way, and it will also save you money.To get more teeth whitening tips, visit http://www.getteethwhiteningtips.com where you'll find great information on different teeth whitening methods.